Pestalozzi, Johann Heinrich. Image. Britannica School, Encyclopædia Britannica, 3 Dec. 2018. school.eb.co.uk/levels/advanced/assembly/view/118010. Accessed 26 Feb. 2019.
Here are two secondary sources about Pestalozzi written by a historian (J.A. Green), Professor of Education at the University of Sheffield.
Green, John Alfred. The Educational Ideas of Pestalozzi. Warwick & York, Inc., University Tutorial Press, Ld., 1867.
Green, John Alfred. Life and Work of Pestalozzi. Warwick & York, Inc., University Tutorial Press, Ld., 1912.
Key questions to consider when reading for historical knowledge & understanding